ELI5: How do we know that light is the fastest thing in existence? Submitted by Grump-Dog t3_10pfa2s on January 30, 2023 at 9:54 PM in explainlikeimfive 32 comments 10
[deleted] t1_j6k68hk wrote on January 30, 2023 at 10:19 PM Reply to comment by berael in ELI5: How do we know that light is the fastest thing in existence? by Grump-Dog [deleted] Permalink Parent 1
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